Merge tag 'cleanup2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
[linux-3.10.git] / arch / arm / mach-omap2 / io.c
1 /*
2  * linux/arch/arm/mach-omap2/io.c
3  *
4  * OMAP2 I/O mapping code
5  *
6  * Copyright (C) 2005 Nokia Corporation
7  * Copyright (C) 2007-2009 Texas Instruments
8  *
9  * Author:
10  *      Juha Yrjola <juha.yrjola@nokia.com>
11  *      Syed Khasim <x0khasim@ti.com>
12  *
13  * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
14  *
15  * This program is free software; you can redistribute it and/or modify
16  * it under the terms of the GNU General Public License version 2 as
17  * published by the Free Software Foundation.
18  */
19 #include <linux/module.h>
20 #include <linux/kernel.h>
21 #include <linux/init.h>
22 #include <linux/io.h>
23 #include <linux/clk.h>
24
25 #include <asm/tlb.h>
26 #include <asm/mach/map.h>
27
28 #include <plat/sram.h>
29 #include <plat/sdrc.h>
30 #include <plat/serial.h>
31 #include <plat/omap-pm.h>
32 #include <plat/omap_hwmod.h>
33 #include <plat/multi.h>
34 #include <plat/dma.h>
35
36 #include "iomap.h"
37 #include "voltage.h"
38 #include "powerdomain.h"
39 #include "clockdomain.h"
40 #include "common.h"
41 #include "clock2xxx.h"
42 #include "clock3xxx.h"
43 #include "clock44xx.h"
44
45 /*
46  * The machine specific code may provide the extra mapping besides the
47  * default mapping provided here.
48  */
49
50 #if defined(CONFIG_SOC_OMAP2420) || defined(CONFIG_SOC_OMAP2430)
51 static struct map_desc omap24xx_io_desc[] __initdata = {
52         {
53                 .virtual        = L3_24XX_VIRT,
54                 .pfn            = __phys_to_pfn(L3_24XX_PHYS),
55                 .length         = L3_24XX_SIZE,
56                 .type           = MT_DEVICE
57         },
58         {
59                 .virtual        = L4_24XX_VIRT,
60                 .pfn            = __phys_to_pfn(L4_24XX_PHYS),
61                 .length         = L4_24XX_SIZE,
62                 .type           = MT_DEVICE
63         },
64 };
65
66 #ifdef CONFIG_SOC_OMAP2420
67 static struct map_desc omap242x_io_desc[] __initdata = {
68         {
69                 .virtual        = DSP_MEM_2420_VIRT,
70                 .pfn            = __phys_to_pfn(DSP_MEM_2420_PHYS),
71                 .length         = DSP_MEM_2420_SIZE,
72                 .type           = MT_DEVICE
73         },
74         {
75                 .virtual        = DSP_IPI_2420_VIRT,
76                 .pfn            = __phys_to_pfn(DSP_IPI_2420_PHYS),
77                 .length         = DSP_IPI_2420_SIZE,
78                 .type           = MT_DEVICE
79         },
80         {
81                 .virtual        = DSP_MMU_2420_VIRT,
82                 .pfn            = __phys_to_pfn(DSP_MMU_2420_PHYS),
83                 .length         = DSP_MMU_2420_SIZE,
84                 .type           = MT_DEVICE
85         },
86 };
87
88 #endif
89
90 #ifdef CONFIG_SOC_OMAP2430
91 static struct map_desc omap243x_io_desc[] __initdata = {
92         {
93                 .virtual        = L4_WK_243X_VIRT,
94                 .pfn            = __phys_to_pfn(L4_WK_243X_PHYS),
95                 .length         = L4_WK_243X_SIZE,
96                 .type           = MT_DEVICE
97         },
98         {
99                 .virtual        = OMAP243X_GPMC_VIRT,
100                 .pfn            = __phys_to_pfn(OMAP243X_GPMC_PHYS),
101                 .length         = OMAP243X_GPMC_SIZE,
102                 .type           = MT_DEVICE
103         },
104         {
105                 .virtual        = OMAP243X_SDRC_VIRT,
106                 .pfn            = __phys_to_pfn(OMAP243X_SDRC_PHYS),
107                 .length         = OMAP243X_SDRC_SIZE,
108                 .type           = MT_DEVICE
109         },
110         {
111                 .virtual        = OMAP243X_SMS_VIRT,
112                 .pfn            = __phys_to_pfn(OMAP243X_SMS_PHYS),
113                 .length         = OMAP243X_SMS_SIZE,
114                 .type           = MT_DEVICE
115         },
116 };
117 #endif
118 #endif
119
120 #ifdef  CONFIG_ARCH_OMAP3
121 static struct map_desc omap34xx_io_desc[] __initdata = {
122         {
123                 .virtual        = L3_34XX_VIRT,
124                 .pfn            = __phys_to_pfn(L3_34XX_PHYS),
125                 .length         = L3_34XX_SIZE,
126                 .type           = MT_DEVICE
127         },
128         {
129                 .virtual        = L4_34XX_VIRT,
130                 .pfn            = __phys_to_pfn(L4_34XX_PHYS),
131                 .length         = L4_34XX_SIZE,
132                 .type           = MT_DEVICE
133         },
134         {
135                 .virtual        = OMAP34XX_GPMC_VIRT,
136                 .pfn            = __phys_to_pfn(OMAP34XX_GPMC_PHYS),
137                 .length         = OMAP34XX_GPMC_SIZE,
138                 .type           = MT_DEVICE
139         },
140         {
141                 .virtual        = OMAP343X_SMS_VIRT,
142                 .pfn            = __phys_to_pfn(OMAP343X_SMS_PHYS),
143                 .length         = OMAP343X_SMS_SIZE,
144                 .type           = MT_DEVICE
145         },
146         {
147                 .virtual        = OMAP343X_SDRC_VIRT,
148                 .pfn            = __phys_to_pfn(OMAP343X_SDRC_PHYS),
149                 .length         = OMAP343X_SDRC_SIZE,
150                 .type           = MT_DEVICE
151         },
152         {
153                 .virtual        = L4_PER_34XX_VIRT,
154                 .pfn            = __phys_to_pfn(L4_PER_34XX_PHYS),
155                 .length         = L4_PER_34XX_SIZE,
156                 .type           = MT_DEVICE
157         },
158         {
159                 .virtual        = L4_EMU_34XX_VIRT,
160                 .pfn            = __phys_to_pfn(L4_EMU_34XX_PHYS),
161                 .length         = L4_EMU_34XX_SIZE,
162                 .type           = MT_DEVICE
163         },
164 #if defined(CONFIG_DEBUG_LL) &&                                                 \
165         (defined(CONFIG_MACH_OMAP_ZOOM2) || defined(CONFIG_MACH_OMAP_ZOOM3))
166         {
167                 .virtual        = ZOOM_UART_VIRT,
168                 .pfn            = __phys_to_pfn(ZOOM_UART_BASE),
169                 .length         = SZ_1M,
170                 .type           = MT_DEVICE
171         },
172 #endif
173 };
174 #endif
175
176 #ifdef CONFIG_SOC_TI81XX
177 static struct map_desc omapti81xx_io_desc[] __initdata = {
178         {
179                 .virtual        = L4_34XX_VIRT,
180                 .pfn            = __phys_to_pfn(L4_34XX_PHYS),
181                 .length         = L4_34XX_SIZE,
182                 .type           = MT_DEVICE
183         }
184 };
185 #endif
186
187 #ifdef CONFIG_SOC_AM33XX
188 static struct map_desc omapam33xx_io_desc[] __initdata = {
189         {
190                 .virtual        = L4_34XX_VIRT,
191                 .pfn            = __phys_to_pfn(L4_34XX_PHYS),
192                 .length         = L4_34XX_SIZE,
193                 .type           = MT_DEVICE
194         },
195         {
196                 .virtual        = L4_WK_AM33XX_VIRT,
197                 .pfn            = __phys_to_pfn(L4_WK_AM33XX_PHYS),
198                 .length         = L4_WK_AM33XX_SIZE,
199                 .type           = MT_DEVICE
200         }
201 };
202 #endif
203
204 #ifdef  CONFIG_ARCH_OMAP4
205 static struct map_desc omap44xx_io_desc[] __initdata = {
206         {
207                 .virtual        = L3_44XX_VIRT,
208                 .pfn            = __phys_to_pfn(L3_44XX_PHYS),
209                 .length         = L3_44XX_SIZE,
210                 .type           = MT_DEVICE,
211         },
212         {
213                 .virtual        = L4_44XX_VIRT,
214                 .pfn            = __phys_to_pfn(L4_44XX_PHYS),
215                 .length         = L4_44XX_SIZE,
216                 .type           = MT_DEVICE,
217         },
218         {
219                 .virtual        = L4_PER_44XX_VIRT,
220                 .pfn            = __phys_to_pfn(L4_PER_44XX_PHYS),
221                 .length         = L4_PER_44XX_SIZE,
222                 .type           = MT_DEVICE,
223         },
224 #ifdef CONFIG_OMAP4_ERRATA_I688
225         {
226                 .virtual        = OMAP4_SRAM_VA,
227                 .pfn            = __phys_to_pfn(OMAP4_SRAM_PA),
228                 .length         = PAGE_SIZE,
229                 .type           = MT_MEMORY_SO,
230         },
231 #endif
232
233 };
234 #endif
235
236 #ifdef CONFIG_SOC_OMAP2420
237 void __init omap242x_map_common_io(void)
238 {
239         iotable_init(omap24xx_io_desc, ARRAY_SIZE(omap24xx_io_desc));
240         iotable_init(omap242x_io_desc, ARRAY_SIZE(omap242x_io_desc));
241 }
242 #endif
243
244 #ifdef CONFIG_SOC_OMAP2430
245 void __init omap243x_map_common_io(void)
246 {
247         iotable_init(omap24xx_io_desc, ARRAY_SIZE(omap24xx_io_desc));
248         iotable_init(omap243x_io_desc, ARRAY_SIZE(omap243x_io_desc));
249 }
250 #endif
251
252 #ifdef CONFIG_ARCH_OMAP3
253 void __init omap34xx_map_common_io(void)
254 {
255         iotable_init(omap34xx_io_desc, ARRAY_SIZE(omap34xx_io_desc));
256 }
257 #endif
258
259 #ifdef CONFIG_SOC_TI81XX
260 void __init omapti81xx_map_common_io(void)
261 {
262         iotable_init(omapti81xx_io_desc, ARRAY_SIZE(omapti81xx_io_desc));
263 }
264 #endif
265
266 #ifdef CONFIG_SOC_AM33XX
267 void __init omapam33xx_map_common_io(void)
268 {
269         iotable_init(omapam33xx_io_desc, ARRAY_SIZE(omapam33xx_io_desc));
270 }
271 #endif
272
273 #ifdef CONFIG_ARCH_OMAP4
274 void __init omap44xx_map_common_io(void)
275 {
276         iotable_init(omap44xx_io_desc, ARRAY_SIZE(omap44xx_io_desc));
277         omap_barriers_init();
278 }
279 #endif
280
281 /*
282  * omap2_init_reprogram_sdrc - reprogram SDRC timing parameters
283  *
284  * Sets the CORE DPLL3 M2 divider to the same value that it's at
285  * currently.  This has the effect of setting the SDRC SDRAM AC timing
286  * registers to the values currently defined by the kernel.  Currently
287  * only defined for OMAP3; will return 0 if called on OMAP2.  Returns
288  * -EINVAL if the dpll3_m2_ck cannot be found, 0 if called on OMAP2,
289  * or passes along the return value of clk_set_rate().
290  */
291 static int __init _omap2_init_reprogram_sdrc(void)
292 {
293         struct clk *dpll3_m2_ck;
294         int v = -EINVAL;
295         long rate;
296
297         if (!cpu_is_omap34xx())
298                 return 0;
299
300         dpll3_m2_ck = clk_get(NULL, "dpll3_m2_ck");
301         if (IS_ERR(dpll3_m2_ck))
302                 return -EINVAL;
303
304         rate = clk_get_rate(dpll3_m2_ck);
305         pr_info("Reprogramming SDRC clock to %ld Hz\n", rate);
306         v = clk_set_rate(dpll3_m2_ck, rate);
307         if (v)
308                 pr_err("dpll3_m2_clk rate change failed: %d\n", v);
309
310         clk_put(dpll3_m2_ck);
311
312         return v;
313 }
314
315 static int _set_hwmod_postsetup_state(struct omap_hwmod *oh, void *data)
316 {
317         return omap_hwmod_set_postsetup_state(oh, *(u8 *)data);
318 }
319
320 static void __init omap_common_init_early(void)
321 {
322         omap_init_consistent_dma_size();
323 }
324
325 static void __init omap_hwmod_init_postsetup(void)
326 {
327         u8 postsetup_state;
328
329         /* Set the default postsetup state for all hwmods */
330 #ifdef CONFIG_PM_RUNTIME
331         postsetup_state = _HWMOD_STATE_IDLE;
332 #else
333         postsetup_state = _HWMOD_STATE_ENABLED;
334 #endif
335         omap_hwmod_for_each(_set_hwmod_postsetup_state, &postsetup_state);
336
337         omap_pm_if_early_init();
338 }
339
340 #ifdef CONFIG_SOC_OMAP2420
341 void __init omap2420_init_early(void)
342 {
343         omap2_set_globals_242x();
344         omap2xxx_check_revision();
345         omap_common_init_early();
346         omap2xxx_voltagedomains_init();
347         omap242x_powerdomains_init();
348         omap242x_clockdomains_init();
349         omap2420_hwmod_init();
350         omap_hwmod_init_postsetup();
351         omap2420_clk_init();
352 }
353 #endif
354
355 #ifdef CONFIG_SOC_OMAP2430
356 void __init omap2430_init_early(void)
357 {
358         omap2_set_globals_243x();
359         omap2xxx_check_revision();
360         omap_common_init_early();
361         omap2xxx_voltagedomains_init();
362         omap243x_powerdomains_init();
363         omap243x_clockdomains_init();
364         omap2430_hwmod_init();
365         omap_hwmod_init_postsetup();
366         omap2430_clk_init();
367 }
368 #endif
369
370 /*
371  * Currently only board-omap3beagle.c should call this because of the
372  * same machine_id for 34xx and 36xx beagle.. Will get fixed with DT.
373  */
374 #ifdef CONFIG_ARCH_OMAP3
375 void __init omap3_init_early(void)
376 {
377         omap2_set_globals_3xxx();
378         omap3xxx_check_revision();
379         omap3xxx_check_features();
380         omap_common_init_early();
381         omap3xxx_voltagedomains_init();
382         omap3xxx_powerdomains_init();
383         omap3xxx_clockdomains_init();
384         omap3xxx_hwmod_init();
385         omap_hwmod_init_postsetup();
386         omap3xxx_clk_init();
387 }
388
389 void __init omap3430_init_early(void)
390 {
391         omap3_init_early();
392 }
393
394 void __init omap35xx_init_early(void)
395 {
396         omap3_init_early();
397 }
398
399 void __init omap3630_init_early(void)
400 {
401         omap3_init_early();
402 }
403
404 void __init am35xx_init_early(void)
405 {
406         omap3_init_early();
407 }
408
409 void __init ti81xx_init_early(void)
410 {
411         omap2_set_globals_ti81xx();
412         omap3xxx_check_revision();
413         ti81xx_check_features();
414         omap_common_init_early();
415         omap3xxx_voltagedomains_init();
416         omap3xxx_powerdomains_init();
417         omap3xxx_clockdomains_init();
418         omap3xxx_hwmod_init();
419         omap_hwmod_init_postsetup();
420         omap3xxx_clk_init();
421 }
422 #endif
423
424 #ifdef CONFIG_ARCH_OMAP4
425 void __init omap4430_init_early(void)
426 {
427         omap2_set_globals_443x();
428         omap4xxx_check_revision();
429         omap4xxx_check_features();
430         omap_common_init_early();
431         omap44xx_voltagedomains_init();
432         omap44xx_powerdomains_init();
433         omap44xx_clockdomains_init();
434         omap44xx_hwmod_init();
435         omap_hwmod_init_postsetup();
436         omap4xxx_clk_init();
437 }
438 #endif
439
440 void __init omap_sdrc_init(struct omap_sdrc_params *sdrc_cs0,
441                                       struct omap_sdrc_params *sdrc_cs1)
442 {
443         omap_sram_init();
444
445         if (cpu_is_omap24xx() || omap3_has_sdrc()) {
446                 omap2_sdrc_init(sdrc_cs0, sdrc_cs1);
447                 _omap2_init_reprogram_sdrc();
448         }
449 }